A Study on Preconditioning Multiwavelet Systems for Image Compression
WAA '01 Proceedings of the Second International Conference on Wavelet Analysis and Its Applications
Some properties and construction of multiwavelets related to different symmetric centers
Mathematics and Computers in Simulation
Marquardt optimization method to design two-channel quadrature mirror filter banks
Digital Signal Processing
Construction of nonseparable multiwavelets for nonlinear image compression
EURASIP Journal on Applied Signal Processing
Odd-length armlets with flipping property and its application in image compression
Expert Systems with Applications: An International Journal
ROI and FOI algorithms for wavelet-based video compression
PCM'04 Proceedings of the 5th Pacific Rim conference on Advances in Multimedia Information Processing - Volume Part III
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The design of optimal multifilter banks and optimum time-frequency resolution multiwavelets with different objective functions is discussed. The symmetric extension transform related to multifilter banks with symmetric properties is presented. It is shown that such a symmetric extension transform is nonexpensive. More optimal multifilter banks for image compression are constructed, and some of them are used in image compression. Experiments show that optimal multifilter banks have better performances in image compression than Daubechies' orthogonal wavelet filters and Daubechies' least asymmetric wavelet filters, and for some images, they even have better performances than the scalar (9,7)-tap biorthogonal wavelet filters. Experiments also show that the symmetric extension transform provided in this paper improves the rate-distortion performance compared with the periodic extension transform